object ScalaVarDemo1 {
  def main(args: Array[String]): Unit = {
    var a: Int = 10
    var b: Int = 20
    b = 30;
    println("a=" + a)
    println("b=" + b)

    var age: Int = 10
    var sal: Double = 11.2
    var name: String = "tom"
    var isPass: Boolean = true

    var score : Float = 99.99F
    println(s"$name 今年 $age 岁了 ， 薪资为$sal 绩效为$score 是否涨工资 $isPass")
  }
}
